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The emergency response exercises with the use of mobile laboratories in the Chornobyl exclusion zone, which have been conducted from 2 to 8 September 2018, were completed. Sixty experts and 13 equipped mobile laboratories for radiation survey exercised conditional emergency scenarios during the week, which involved a conditional release of radioactive substances caused by NPP accident.

Experts of the Federal Agency for Radiation Protection of Germany (BfS), State Scientific and Technical Center for Nuclear and Radiation Safety (SSTC NRS), Chornobyl Center, Rivne NPP, Emergency and Technical Center, Energoatom Company, and SSE Ecotsentr participated in the training.

The participants of the exercises were divided into teams. They performed radiation monitoring by a certain route in the Chornobyl exclusion zone. In particular, the crew of the SSTC NRS RanidSonni mobile laboratory has conducted a survey of such settlements as Masheve, Krasne, Zymovyshche, Kryva Gora, Starosillia, Kakhovka, etc.

According to the results of the studies, the highest dose rate of gamma radiation was observed in Masheve: up to 3 μSv/h, Krasne: 1.95 μSv/h and Zymovyshche: 1.54 μSv/h. Using the obtained data, a dose rate map was developed according to RanidSonni laboratory route. The map will later be used by the Center's experts for scientific purposes.

Advanced radiation monitoring systems applied by radiation safety experts in German and Ukraine were used within the exercises. Moreover, hexakopter and helicopter MI-2 were involved during the exercises. They conducted additional gamma-survey of exclusion zone contamination.

Intercalibration of equipment was performed at all stages of the exercises to verify the obtained data from various dosimetric systems. According to SSTC NRS experts, all indexes obtained using the Center’s equipment and other participants, including German colleagues from BfS were identical.

It is necessary to remind that similar exercises were conducted for the first time in 2016. The main objective of the event is to exchange experience on the methods of territory survey, intercalibration of equipment and personnel skill improvement.

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